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Multiple-cylinder submarine		 Jolly Roger

 

During WWII  the Dutch B.V. Nederlandsche Ver. Scheepsbouw Bureaux (NEVESBU)made several designs of a multiple-cylinder submarine. They designed an operational attack boat and a cargo/minelayer boat. It is likely that these designs were made in the U.K. on request of the allies. The cargo version was probably intended to supply Malta.

The Dutch post-war 3-cylinder Dolfijn/Potvis-class design clearly stems from these designs.

 

 

General arrangement of "Operational Submarine of 1125 tons", Nov 1944 (Photo: © Collection J.J. Kragten)General arrangement of "Operational Submarine of 1125 tons", Nov 1944 (Photo: © Collection J.J. Kragten)  
General arrangement of "Operational Submarine of 1125 tons", Nov 1944 (Photo: © Collection J.J. Kragten)General arrangement of "Operational Submarine of 1125 tons", Nov 1944 (Photo: © Collection J.J. Kragten)  

General arrangement of "Operational Submarine of 1125 tons", Nov 1944 (Photo: © Collection J.J. Kragten)

 

General arrangement of "Cargo Submarine of 1600 tons", July 1944 (Photo: © Collection J.J. Kragten)General arrangement of "Cargo Submarine of 1600 tons", July 1944 (Photo: © Collection J.J. Kragten)  
General arrangement of "Cargo Submarine of 1600 tons", July 1944 (Photo: © Collection J.J. Kragten)General arrangement of "Cargo Submarine of 1600 tons", July 1944 (Photo: © Collection J.J. Kragten)  

General arrangement of "Cargo Submarine of 1600 tons", July 1944 (Photo: © Collection J.J. Kragten)

 

 

Type Operational submarine Cargo/minelayer submarine
Earliest known date Nov 1944 July 1944
Built Never built
Type 4 cylinder attack submarine 4 cylinder cargo/minelayer submarine
Class name Unknown
Design # 2063 2061
Designer B.V. Nederlandsche Ver. Scheepsbouw Bureaux
Hull 6 cylinders 4 Cylinders
LexBexDr 292' x ? x ? 279' x ? x ?
Displacement Stnd./Surf. 1125 / 1500 t 1600(incl. 450 t cargo) / 2000 t
Engines 2 x 1600 Hp 16 cylinder diesels
6400 Hp geared		 2 x 1600 Hp 16 cylinder diesels
Fuel 350 t ?
Drive Diesel electric
Main motor 2 motors, 4800 Hp total 2 motors
Batteries 2 compartments with 7 x 16 cells 2 compartments with 14 x 8 cells
Snorkel No No
Propellers 2 2
Speed Surf./Subm. 22 / 20 Kts 13 / ? Kts
Diving depth 500'
Cargo capacity - 75 cu.ft. per ton
Armament 16 torpedo's, 800 rounds ?
Torp. tubes 6 x 21" bow and 4 x 21" stern.
All Dutch Navy type		 ?
Guns 2 x twin 4"
2 x quadruple Oerlikon		 ?
Mines - 234
Moored, contact, 1 ton each
Periscopes 1 ?
Notes 25 tons of bridge armour. -
Note from the original designers: The design holds considerable reserve, which may be used to increase diving depth to some 750', place artillery armament, etc.

 

 

Results of "submerged dive plane control experiments" with a model of the cargo submarine, 30 Jan 1943. (Photo: © Collection J.J. Kragten)

Results of "submerged dive plane control experiments" with a model of the cargo submarine, 30 Jan 1943. (Photo: © Collection J.J. Kragten)

 

 

 

 

 

 

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